Draw-works drum and method of locking the drums and flange sections thereof



Sept. 18, 1928. 1,684,482

D S. FAULKNER ET AL ORKS RUM DRAWW DRUM AND METHOD OF LOGKIN HE D S ANDFLANGE SECTION HEREO Filed Oct. 19, 19

Patented Sept. 18, 1928.

U N D DAVID s. FAULKNER AND EDWARD Truss, orLosANGELns,cemronnmnssrenons 7 TO THE NATIONAL sunny COMPANY or nnLAwARaoFNEw YORK, N. Y acon- PORATION OF DELAWARE.

DRAW-WORKS DRUM AND METHOD 'oF'Loc ING THE DRUMS-'ANDFLANGE j'sEoTIoNsmanner; 7

Application filed October 1951927. Serial No; 22?;1365

This invention relates to drum constructions "for rotary drawworks andtothemethod of locking the drum and flangese'ctions there of, and ismore particularly related to a drum formed of two half sections eachincluding-a half of the drum formed integral with a flange and to themethod of uniting or'looking the half sections together't-o form asubstantially integral drawworks drum; In-the copendmg application ofEdward Timbsy Serial No. 194,045, filed May 25,1927, is illustrated atwo-piece drum for rotary draw-works 1ncluding two half sectionsunitedat-the1rcenter to provide a substantially'integral drawworks drum, andthis invention is directed to an improvement over the drum'constructionshown in the said application ot'Edward Timbs and to the methodof'locking-thesesed tions together to form the improved construction.

An object of this invention is-toprovide a two-piece drumconstruction'includlng-two hall sections which are'adapted to beunit'edtogether at the center ofthe drumby means of a lock ring adaptedtofitover'the flanges formed on the half sections at their adjacent endsand the loekring being welded to the half sections on the surface ot thedrum in order to provide a substantially integral drum.

Another object of this inventi on is -to provi de a method of unitingorlocking the drum and flange sections of-a drum-adapted for use in arotary drawworks which includes the locking of -a split'ring overannular flanges formed on the drum'sections,-and welding the lockingring to the drum sections at spaced apart annular welds.

Other objects and advantages of this 1nvention, it is believed, will beapparent from the following detailed description of a preferredembodiment thereof, as illustrated in the accompanying drawings.

In the drawings:

Figure 1 is an elevation in half vertical section of a drawworks drumembodying this invention.

Figure 2 is an end sectional ylew taken substantially on the line 22 ofFigure 1.

Figure 3 is an enlarged fragmental sectional view illustrating themanner of locking the drum and flange sections together by means of asplit ring.

Ina-he construction of rotary drawworks drums such, for example," as areembodied in the drawworks employed in the operation of drill'ing-we-lls, it is essential that the drum and "flanges'of the drum beunitedtogether 1nf1a manner to prevent spreading of the flanges-away'from the"drum and also that the-entire construction be rigid or fiianlytiedtogether, as these drums must support weights eXtendingd-nto-"tons andmust be operated to raise and lower these weights at a relatively fastrate in orderthat the drill stem or casingmay be quickly "removed -fromthe well Venti'on, illustrated in: the accompanyingdrawings, 1 and 2indicate the half sections of the drum and are each otthe sameconstructi'ong and inc-ludehal-f drum sections 3 having integral flanges4 at their opposed, ends; Formed integral with each of the sect-i onsland Q -are hubs=5 by means of which the drum is supported upon the-shaft6.; The drum formed may be either the-ty e which is secured to the shaft6' by -means of'keys, ormay be of the type which is' rotatably mounted'upon the shaft and driven through a differential speed mechanism fromthe pro tit-ting sha-ft'-'6. The hubs *5 '0fthe sections 1 and 2 may beformed either exactly the same, as illustrated in the drawings, or thehub 5 on the right hand side of the drum, as illustrated in thedrawings, may extend inwardly into the drum section in order toaccommodate a clutch within the brake band which is secured to theflange 4:. Each of the sections land 2 is at its adjacent end formedwith an inwardly extending. flange 7 which extends inwardly within theflange to a point to practically engage the shaft 6 but not providing atight fit at this point to permit the drum section of the drawworks drumto yield somewhat at the center as the line is reeled thereon. Theflanges 7 are provided with annular channels 8 and intermediate upwardlyextending flanges-'9 at the inner edges of the channels 8. A split ringisprovided which ring10 and the flanges 9. At the other-points,

the split ring 10 does not engage the drum and flange sections 1 and 2but is formed smaller than the channels provided intermediate thesections 1 and 2 on the outer surface.

The split ring 10 :may be secured to the sections 1 and 2 in anysuitable or desirable manner but it is preferably united or locked tothe sections 1 and 2 by welding the edges thereof, as illustrated at 18and 19, at longitudinally spaced points on the drum construc; tion tothe sections 1 and 2 atannularly extending welds formed entirely aroundthe sections 1 and 2. Any suitable form of welded joint may be providedbetween the lock ring 10 and sections 1 and 2 such, for example, as isillustrated by merely cutting away the edge of the section 1 to form atriangular welded joint 20 or by cutting-away at an 1 angle the lockring 10 and grooving out the section 2 to form an annular groove and alock welded ring extending around the drum, as illustrated at 21.

The flanges 7 are provided with inwardly extending portions 22 at spacedintervals aroundtheir inner peripheries with inwardly projectingportionsproviding. the spaced means which practically engage, the shaft 6.

Having fully described our invention, it is to be understood that we donot wishto be limited to the details herein set forth, but ourinventionis of the full scope of the appended claims. a 1

WVe claim:

1. A rotary drawworks drum having two drum and flange sections havingannular flanges at their adjacent ends, a split ring mounted betweensaid sections with the annular flanges extending into a channel formeding two sections, each section including substantially one halfof thespool and having integral flanges at their opposed ends, adjacentupwardly extending annular flanges formed on the said sections, and asplit ring fitted for securingthedrum sections together.

3. A rotary drawivorks drum including two half sections, thehalfsections providing inner adjacent upwardly extending flanges and a splitring secured to said sections and holding said sectionsfrom expandingaway from one another at said flanges.

4. A rotary drawworks drum including two drum sections, a split ringhaving an inner annular channel, and means secured to each of said drumsections and fitted Within said annular channel;

5. A drawworks drum having a pair of complementary spool sections, theends of the spool sections being provided with adjacent upwardlyextending flanges, a connecting ring mounted between said sections andsecuring said sections together by said flanges, and being welded tothespool sections at spaced annular welds. j

6. i A rotary drawworks drum having a pair of complementary drum andflange sections each formed to provide substantially onehaving a channelinto which said flanges are p half of the drawworks drum, annularflanges formed at the inner ends of said sections and providing inwardlyextending annular flanges finished at their adjacent sides, and a ringhaving a centralchannel adapted to fit over the upwardly extendingannular flanges, the said upwardly extending annular flanges and saidring being finished to pro vide a tight fit for holding the drum andflange sections together, a

Signed at Torrance,California, this 7th day of October, 1927. a r

, DAVID s. FAULKNER.

EDWARD TIMES.

